fixed issue with es-lint: changed the first parameter of the no-unused-vars option in .eslintr.json from 'error' to 2
fixed issue with es-lint: changed the first parameter of the no-unused-vars option in .eslintr.json from 'error' to 2

agektmr/pwa-ecommerce-demo,google-developer-training/pwa-ecommerce-demo,google-developer-training/pwa-ecommerce-demo,agektmr/pwa-ecommerce-demo